Aftermarket barrels for Sig Sauer P365, P365XL, P320 X-Compact, and P320 Compact pistols. Stocked finishes include black DLC, black nitride, titanium nitride (TiN) gold, copper, and stainless. Available in standard length and threaded 1/2x28 for use with a compensator or suppressor.
Picking the right Sig barrel
Match the barrel to your slide model first — a P365 barrel will not drop into a P365XL slide (and vice versa). The P320 X-Compact and P320 Compact also use distinct barrel lengths, so confirm your platform before you order. Threaded variants are 1/2x28 for use with a 9mm compensator or suppressor.
Stock here is dominated by True Precision, with a few Brownells listings rounding out the P365 / P365XL selection. True Precision barrels are stainless steel and direct drop-in for OEM slides — no fitting required.
If you're running a threaded barrel, pair it with a 9mm muzzle device from our compensators category. Browse other Sig parts on the Sig parts hub, including Sig part kits for repair and upgrade work. Free shipping on every order.
